Thank you for trying to help.Your answer on my previous question was great.And yes,mathematical inuduction could probably help here,too.I've tried to solve it with different aproach,by trying to make some combinations of geometrical rows,but that didnt really help. I'l try again so if I come up with something i will post.

Let me just say something about your first post.
The relationship is not entirely correct. Let me explain, we define where for as a real number such as . Now we can prove that such a real number always exists and is unique.

Now the problem with defining is that the complex-numbers have no sense of positive or negative. Mathematically we say that they lack ordering thus we cannot define what it means a positive complex or negative complex number as in the first paragraph.